Async annotation

async.py

from threading import Thread
from functools import wraps


def async(func):
    """
    Wraps the func execution with a thread.

    Usage:

    @async
    def my_task():
        time.sleep(1)
        print('my_task done')

    th1 = my_task()
    print('main')
    th1.join()
    """
    @wraps(func)
    def async_func(*args, **kwargs):
        func_hl = Thread(target = func, args = args, kwargs = kwargs)
        func_hl.start()
        return func_hl
    return async_func